The third and final book in the }House Of Secrets{ trilogy, the Walker kids are about to undertake their most important mission to date.
Ages: 9+.
Rowling on }House Of Secrets{. \'A breakneck, jam-packed, roller coaster of an adventure\', J.
K.
The third and final book in the }House Of Secrets{ trilogy, the Walker kids are about to undertake their most important mission to date